Toshimasa Fujisawa et al 2006 Rep. Prog. Phys. 69 759 doi:10.1088/0034-4885/69/3/R05
Time-dependent single-electron transport through quantum dots
REVIEW ARTICLEToshimasa Fujisawa1,2, Toshiaki Hayashi1 and Satoshi Sasaki1
Show affiliationsWe describe time-dependent single-electron transport through quantum dots in the Coulomb blockade regime. Coherent dynamics of a single charge qubit in a double quantum dot is discussed with full one-qubit manipulation. Strength of decoherence is controlled with the applied voltage, but uncontrolled decoherence arises from electron–phonon coupling and background fluctuations. Then energy-relaxation dynamics is discussed for orbital and spin degree of freedom in a quantum dot. The electron–phonon interaction and spin–orbit coupling can be investigated as the dissipation problem. Finally, charge detection measurement is presented for statistical analysis of single-electron tunnelling transitions and for a sensitive qubit read-out device.
- PACS
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63.22.-m Phonons or vibrational states in low-dimensional structures and nanoscale materials
73.23.Hk Coulomb blockade; single-electron tunneling
03.67.Lx Quantum computation architectures and implementations
03.65.Yz Decoherence; open systems; quantum statistical methods
- Subjects
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Surfaces, interfaces and thin films
- Dates
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Issue 3 (March 2006)
Received 21 November 2005, in final form 16 January 2006
Published 20 February 2006
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Time-dependent single-electron transport through quantum dots
Toshimasa Fujisawa et al 2006 Rep. Prog. Phys. 69 759
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